Three years ago, chiller failures at Marshalltown Medical and Surgical Center created a real crisis. A measured dose of "CPR" (chilled-water plant replacement) has since restored the system to health. Inspect this treatment, from diagnosis to equipment selection to success and savings. By Charles S. Heldenbrand, P.E.
A new federal courthouse on Long Island seeks not only to illuminate visitors with the light of the law, but with plenty of natural light as well. After appropriate deliberation by the designers, the final system does justice to some creative architecture, a challenging atrium, and even preplanned expansion strategies. By John Lennon, P.E.
Mixed-flow impeller roof exhaust technology usually has been deployed for re-entrainment prevention and odor control. Now, it's providing energy savings in industrial and educational settings in a heat recovery role. By Paul A. Tetley
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.